ICD-10 Code E09.311 – Drug or chemical induced diabetes mellitus with unspecified diabetic retinopathy with macular edema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.311 – Drug or chemical induced diabetes mellitus with unspecified diabetic retinopathy with macular edema
What it is
This code identifies diabetes caused by a drug or chemical, with diabetic retinopathy affecting the retina and macular edema present. Use it when the record links the diabetes and eye disease to the same condition.
Clinical signs
Findings may include retinal changes consistent with diabetic retinopathy and swelling involving the macula. Clinical features vary; refer to documentation.
When to use this code
Use E09.311 when the provider documents drug- or chemical-induced diabetes and specifies unspecified diabetic retinopathy with macular edema. The eye complication must be documented as part of the diabetic condition, not as a separate unrelated diagnosis.
If the chart does not clearly state the cause of diabetes or the retinopathy subtype, check documentation before coding. You should also confirm whether the diabetes is drug induced rather than type 1, type 2, or another secondary form.
Do not use for
Do not use this code for diabetic retinopathy without macular edema, or when the diabetes type is not drug or chemical induced. Check documentation if the eye findings are not specifically tied to diabetes.
Coding tip
Verify both the cause of diabetes and the presence of macular edema in the eye documentation before assigning E09.311.